diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java b/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
index 2d78031..c5b9541 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
@@ -38,6 +38,7 @@
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        //ボタンの重ね合わせ
         View view1 = getLayoutInflater().inflate(R.layout.button_layout, null);
         addContentView(view1, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
 
diff --git a/app/src/main/res/layout/button_layout.xml b/app/src/main/res/layout/button_layout.xml
index 13961d4..9b80d5d 100644
--- a/app/src/main/res/layout/button_layout.xml
+++ b/app/src/main/res/layout/button_layout.xml
@@ -7,38 +7,44 @@
     tools:layout_editor_absoluteY="81dp">
 
     <Button
-        android:id="@+id/button"
+        android:id="@+id/top_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="205dp"
-        android:text="Button"
-        app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_marginBottom="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginLeft="16dp"
+        android:layout_marginRight="8dp"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="8dp"
+        android:text="うえ"
+        app:layout_constraintBottom_toTopOf="@+id/down_button"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/textView2" />
+        app:layout_constraintTop_toBottomOf="@+id/textView2"
+        app:layout_constraintVertical_bias="1.0" />
 
     <TextView
         android:id="@+id/textView2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="16dp"
-        android:layout_marginTop="16dp"
+        android:layout_marginTop="78dp"
         android:text="Cactus"
         android:textColor="@android:color/background_light"
         android:textSize="30sp"
-        app:layout_constraintBottom_toTopOf="@+id/button"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
     <Button
-        android:id="@+id/button2"
+        android:id="@+id/down_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="84dp"
-        android:text="Button"
+        android:layout_marginBottom="16dp"
+        android:layout_marginLeft="16dp"
+        android:layout_marginStart="16dp"
+        android:text="した"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent" />
 
 </android.support.constraint.ConstraintLayout>